diff --git a/tests/vkrenderframework.cpp b/tests/vkrenderframework.cpp
index 01ad330..a423c33 100644
--- a/tests/vkrenderframework.cpp
+++ b/tests/vkrenderframework.cpp
@@ -187,7 +187,7 @@
 
 void VkRenderFramework::InitState()
 {
-    VkResult err;
+    VkResult U_ASSERT_ONLY err;
 
     m_render_target_fmt = VkTestFramework::GetFormat(inst, m_device);